Finding the Fourth Proportional to 8,331,787.80, 12,479,019.30 and 8,145,163.80
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Solution
The fourth proportional to 8,331,787.80, 12,479,019.30 and 8,145,163.80 is: 12,199,501.32
Step by Step Solution
- Step 1: Write the proportion equation
8,331,787.80 : 12,479,019.30 = 8,145,163.80 : x - Step 2: Convert to fraction form
8,331,787.80/12,479,019.30 = 8,145,163.80/x - Step 3: Cross multiply
8,331,787.80x = 12,479,019.30 × 8,145,163.80 - Step 4: Simplify right side
8,331,787.80x = 101,643,656,261,861.34 - Step 5: Solve for x
x = 101,643,656,261,861.34/8,331,787.80 - Step 6: Final answer
x = 12,199,501.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.